[Cami]

You have been given GREAT advice.
How old are your other dogs? I only ask because "puppy-dom" comes with short term memory loss!!
To clarify what I am saying.....
If your other dogs are older than lets say 2 years of age they are housebroken and into some sort of routine by now. We humans tend to forget the bad things once the good starts to settle in.
I'm not trying to imply that your other dogs were not trained sooner but it's highly common for us to forget just how bad things might have been once we have some time between NOW and what happened then.

If you monitor what goes IN you will have a better handle on WHEN it needs to come out.
The best advice I had when we brought our girl home 6 years ago as a 9 week old was to:
Take her outside after meals (she was eating three times a day then), after drinking (Boxers tend to drink ALL THE TIME), after she napped (multiple times a day), after waking up in the AM, right before bedtime, after playing (all the time) and to throw in 2-3 MORE times PER HOUR just to be on the safe side. This routine helped to not only AVOID accidents and clean-up but when she didn't have a chance to make a mistake by going in the house she learned quicker that it was only to be done outside.
I swear I wore the carpet out heading to the back door 20-30 times a day. This schedule was a pain in the rear but I hated the thought of cleaning up even worse. It was short lived and so worth it.
Once she knew that outside = potty we taught her to ring the bell to alert us that she needed to go. She picked up bell training in an afternoon (about 3 hours). Your baby will get there. Just be patient.